I couldn't reproduce this bug, i'm using gutsy here with all packages up to date.
related packages: =========== gnome-control-center 1:2.19.92-0ubuntu2 libgnomekbd1 2.19.91-0ubuntu1
did you by any chance have the "Desktop effects" activated?, if so, when you disable it as in "no effects" did this behaviour continues?.
I couldn't reproduce this bug, i'm using gutsy here with all packages up to date.
related packages: center 1:2.19.92-0ubuntu2
===========
gnome-control-
libgnomekbd1 2.19.91-0ubuntu1
did you by any chance have the "Desktop effects" activated?, if so, when you disable it as in "no effects" did this behaviour continues?.